package com.example.hangzhou.welbeing.mytestdemoapp.utils;

import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Build;
import android.support.annotation.ColorInt;
import android.support.annotation.IntRange;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.widget.DrawerLayout;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.LinearLayout;

import com.example.hangzhou.welbeing.mytestdemoapp.R;

/**
 * 杭州惟君医疗科技有限公司13
 * Created by 20433 on 2018/3/1
 */

public class StatusBarUtil {


    public static final int DEFAULT_STATUS_BAR_ALPHA = 112;

    private static final int FAKE_STATUS_BAR_VIEW_ID = R.id.statusbarutil_fake_status_bar_view;

    private static final int FAKE_TRANSLUCENT_VIEW_ID = R.id.statusbarutil_translucent_view;

    private static final int TAG_KEY_HAVE_SET_OFFSET = -123;


    /**
     * 设置状态栏颜色
     *
     * @param activity 需要设置的 activity
     * @param color    状态栏颜色值
     */

    public static void setColor(Activity activity, @ColorInt int color) {

        setColor(activity, color, DEFAULT_STATUS_BAR_ALPHA);

    }


    /**
     * 设置状态栏颜色
     *
     * @param activity       需要设置的activity
     * @param color          状态栏颜色值
     * @param statusBarAlpha 状态栏透明度
     */


    public static void setColor(Activity activity, @ColorInt int color, @IntRange(from = 0, to = 255) int statusBarAlpha) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

            activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            activity.getWindow().setStatusBarColor(calculateStatusColor(color, statusBarAlpha));

        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();

            View fakeStatusBarView = decorView.findViewById(FAKE_STATUS_BAR_VIEW_ID);

            if (fakeStatusBarView != null) {

                if (fakeStatusBarView.getVisibility() == View.GONE) {

                    fakeStatusBarView.setVisibility(View.VISIBLE);

                }

                fakeStatusBarView.setBackgroundColor(calculateStatusColor(color, statusBarAlpha));

            } else {

                decorView.addView(createStatusBarView(activity, color, statusBarAlpha));

            }

            setRootView(activity);

        }

    }


    /**
     * 为滑动返回界面设置状态栏颜色
     *
     * @param activity 需要设置的activity
     * @param color    状态栏颜色值
     */

    public static void setColorForSwipeBack(Activity activity, int color) {

        setColorForSwipeBack(activity, color, DEFAULT_STATUS_BAR_ALPHA);

    }


    /**
     * 为滑动返回界面设置状态栏颜色
     *
     * @param activity       需要设置的activity
     * @param color          状态栏颜色值
     * @param statusBarAlpha 状态栏透明度
     */

    public static void setColorForSwipeBack(Activity activity, @ColorInt int color,

                                            @IntRange(from = 0, to = 255) int statusBarAlpha) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {


            ViewGroup contentView = ((ViewGroup) activity.findViewById(android.R.id.content));

            View rootView = contentView.getChildAt(0);

            int statusBarHeight = getStatusBarHeight(activity);

            if (rootView != null && rootView instanceof CoordinatorLayout) {

                final CoordinatorLayout coordinatorLayout = (CoordinatorLayout) rootView;

                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {

                    coordinatorLayout.setFitsSystemWindows(false);

                    contentView.setBackgroundColor(calculateStatusColor(color, statusBarAlpha));

                    boolean isNeedRequestLayout = contentView.getPaddingTop() < statusBarHeight;

                    if (isNeedRequestLayout) {

                        contentView.setPadding(0, statusBarHeight, 0, 0);

                        coordinatorLayout.post(new Runnable() {

                            @Override

                            public void run() {

                                coordinatorLayout.requestLayout();

                            }

                        });

                    }

                } else {

                    coordinatorLayout.setStatusBarBackgroundColor(calculateStatusColor(color, statusBarAlpha));

                }

            } else {

                contentView.setPadding(0, statusBarHeight, 0, 0);

                contentView.setBackgroundColor(calculateStatusColor(color, statusBarAlpha));

            }

            setTransparentForWindow(activity);

        }

    }


    /**
     * 设置状态栏纯色 不加半透明效果
     *
     * @param activity 需要设置的 activity
     * @param color    状态栏颜色值
     */

    public static void setColorNoTranslucent(Activity activity, @ColorInt int color) {

        setColor(activity, color, 0);

    }


    /**
     * 设置状态栏颜色(5.0以下无半透明效果,不建议使用)
     *
     * @param activity 需要设置的 activity
     * @param color    状态栏颜色值
     */

    @Deprecated

    public static void setColorDiff(Activity activity, @ColorInt int color) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        transparentStatusBar(activity);

        ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);

        // 移除半透明矩形,以免叠加

        View fakeStatusBarView = contentView.findViewById(FAKE_STATUS_BAR_VIEW_ID);

        if (fakeStatusBarView != null) {

            if (fakeStatusBarView.getVisibility() == View.GONE) {

                fakeStatusBarView.setVisibility(View.VISIBLE);

            }

            fakeStatusBarView.setBackgroundColor(color);

        } else {

            contentView.addView(createStatusBarView(activity, color));

        }

        setRootView(activity);

    }


    /**
     * 使状态栏半透明
     * <p>
     * <p>
     * <p>
     * 适用于图片作为背景的界面,此时需要图片填充到状态栏
     *
     * @param activity 需要设置的activity
     */

    public static void setTranslucent(Activity activity) {

        setTranslucent(activity, DEFAULT_STATUS_BAR_ALPHA);

    }


    /**
     * 使状态栏半透明
     * <p>
     * <p>
     * <p>
     * 适用于图片作为背景的界面,此时需要图片填充到状态栏
     *
     * @param activity       需要设置的activity
     * @param statusBarAlpha 状态栏透明度
     */

    public static void setTranslucent(Activity activity, @IntRange(from = 0, to = 255) int statusBarAlpha) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        setTransparent(activity);

        addTranslucentView(activity, statusBarAlpha);

    }


    /**
     * 针对根布局是 CoordinatorLayout, 使状态栏半透明
     * <p>
     * <p>
     * <p>
     * 适用于图片作为背景的界面,此时需要图片填充到状态栏
     *
     * @param activity       需要设置的activity
     * @param statusBarAlpha 状态栏透明度
     */

    public static void setTranslucentForCoordinatorLayout(Activity activity, @IntRange(from = 0, to = 255) int statusBarAlpha) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        transparentStatusBar(activity);

        addTranslucentView(activity, statusBarAlpha);

    }


    /**
     * 设置状态栏全透明
     *
     * @param activity 需要设置的activity
     */

    public static void setTransparent(Activity activity) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        transparentStatusBar(activity);

        setRootView(activity);

    }


    /**
     * 使状态栏透明(5.0以上半透明效果,不建议使用)
     * <p>
     * <p>
     * <p>
     * 适用于图片作为背景的界面,此时需要图片填充到状态栏
     *
     * @param activity 需要设置的activity
     */

    @Deprecated

    public static void setTranslucentDiff(Activity activity) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

            // 设置状态栏透明

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            setRootView(activity);

        }

    }


    /**
     * 为DrawerLayout 布局设置状态栏变色
     *
     * @param activity     需要设置的activity
     * @param drawerLayout DrawerLayout
     * @param color        状态栏颜色值
     */

    public static void setColorForDrawerLayout(Activity activity, DrawerLayout drawerLayout, @ColorInt int color) {

        setColorForDrawerLayout(activity, drawerLayout, color, DEFAULT_STATUS_BAR_ALPHA);

    }


    /**
     * 为DrawerLayout 布局设置状态栏颜色,纯色
     *
     * @param activity     需要设置的activity
     * @param drawerLayout DrawerLayout
     * @param color        状态栏颜色值
     */

    public static void setColorNoTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout, @ColorInt int color) {

        setColorForDrawerLayout(activity, drawerLayout, color, 0);

    }


    /**
     * 为DrawerLayout 布局设置状态栏变色
     *
     * @param activity       需要设置的activity
     * @param drawerLayout   DrawerLayout
     * @param color          状态栏颜色值
     * @param statusBarAlpha 状态栏透明度
     */

    public static void setColorForDrawerLayout(Activity activity, DrawerLayout drawerLayout, @ColorInt int color,

                                               @IntRange(from = 0, to = 255) int statusBarAlpha) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

            activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            activity.getWindow().setStatusBarColor(Color.TRANSPARENT);

        } else {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

        }

        // 生成一个状态栏大小的矩形

        // 添加 statusBarView 到布局中

        ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);

        View fakeStatusBarView = contentLayout.findViewById(FAKE_STATUS_BAR_VIEW_ID);

        if (fakeStatusBarView != null) {

            if (fakeStatusBarView.getVisibility() == View.GONE) {

                fakeStatusBarView.setVisibility(View.VISIBLE);

            }

            fakeStatusBarView.setBackgroundColor(color);

        } else {

            contentLayout.addView(createStatusBarView(activity, color), 0);

        }

        // 内容布局不是 LinearLayout 时,设置padding top

        if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) {

            contentLayout.getChildAt(1)

                    .setPadding(contentLayout.getPaddingLeft(), getStatusBarHeight(activity) + contentLayout.getPaddingTop(),

                            contentLayout.getPaddingRight(), contentLayout.getPaddingBottom());

        }

        // 设置属性

        setDrawerLayoutProperty(drawerLayout, contentLayout);

        addTranslucentView(activity, statusBarAlpha);

    }


    /**
     * 设置 DrawerLayout 属性
     *
     * @param drawerLayout              DrawerLayout
     * @param drawerLayoutContentLayout DrawerLayout 的内容布局
     */

    private static void setDrawerLayoutProperty(DrawerLayout drawerLayout, ViewGroup drawerLayoutContentLayout) {

        ViewGroup drawer = (ViewGroup) drawerLayout.getChildAt(1);

        drawerLayout.setFitsSystemWindows(false);

        drawerLayoutContentLayout.setFitsSystemWindows(false);

        drawerLayoutContentLayout.setClipToPadding(true);

        drawer.setFitsSystemWindows(false);

    }


    /**
     * 为DrawerLayout 布局设置状态栏变色(5.0以下无半透明效果,不建议使用)
     *
     * @param activity     需要设置的activity
     * @param drawerLayout DrawerLayout
     * @param color        状态栏颜色值
     */

    @Deprecated

    public static void setColorForDrawerLayoutDiff(Activity activity, DrawerLayout drawerLayout, @ColorInt int color) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            // 生成一个状态栏大小的矩形

            ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);

            View fakeStatusBarView = contentLayout.findViewById(FAKE_STATUS_BAR_VIEW_ID);

            if (fakeStatusBarView != null) {

                if (fakeStatusBarView.getVisibility() == View.GONE) {

                    fakeStatusBarView.setVisibility(View.VISIBLE);

                }

                fakeStatusBarView.setBackgroundColor(calculateStatusColor(color, DEFAULT_STATUS_BAR_ALPHA));

            } else {

                // 添加 statusBarView 到布局中

                contentLayout.addView(createStatusBarView(activity, color), 0);

            }

            // 内容布局不是 LinearLayout 时,设置padding top

            if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) {

                contentLayout.getChildAt(1).setPadding(0, getStatusBarHeight(activity), 0, 0);

            }

            // 设置属性

            setDrawerLayoutProperty(drawerLayout, contentLayout);

        }

    }


    /**
     * 为 DrawerLayout 布局设置状态栏透明
     *
     * @param activity     需要设置的activity
     * @param drawerLayout DrawerLayout
     */

    public static void setTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout) {

        setTranslucentForDrawerLayout(activity, drawerLayout, DEFAULT_STATUS_BAR_ALPHA);

    }


    /**
     * 为 DrawerLayout 布局设置状态栏透明
     *
     * @param activity     需要设置的activity
     * @param drawerLayout DrawerLayout
     */

    public static void setTranslucentForDrawerLayout(Activity activity, DrawerLayout drawerLayout,

                                                     @IntRange(from = 0, to = 255) int statusBarAlpha) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        setTransparentForDrawerLayout(activity, drawerLayout);

        addTranslucentView(activity, statusBarAlpha);

    }


    /**
     * 为 DrawerLayout 布局设置状态栏透明
     *
     * @param activity     需要设置的activity
     * @param drawerLayout DrawerLayout
     */

    public static void setTransparentForDrawerLayout(Activity activity, DrawerLayout drawerLayout) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

            activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            activity.getWindow().setStatusBarColor(Color.TRANSPARENT);

        } else {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

        }


        ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);

        // 内容布局不是 LinearLayout 时,设置padding top

        if (!(contentLayout instanceof LinearLayout) && contentLayout.getChildAt(1) != null) {

            contentLayout.getChildAt(1).setPadding(0, getStatusBarHeight(activity), 0, 0);

        }


        // 设置属性

        setDrawerLayoutProperty(drawerLayout, contentLayout);

    }


    /**
     * 为 DrawerLayout 布局设置状态栏透明(5.0以上半透明效果,不建议使用)
     *
     * @param activity     需要设置的activity
     * @param drawerLayout DrawerLayout
     */

    @Deprecated

    public static void setTranslucentForDrawerLayoutDiff(Activity activity, DrawerLayout drawerLayout) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

            // 设置状态栏透明

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            // 设置内容布局属性

            ViewGroup contentLayout = (ViewGroup) drawerLayout.getChildAt(0);

            contentLayout.setFitsSystemWindows(true);

            contentLayout.setClipToPadding(true);

            // 设置抽屉布局属性

            ViewGroup vg = (ViewGroup) drawerLayout.getChildAt(1);

            vg.setFitsSystemWindows(false);

            // 设置 DrawerLayout 属性

            drawerLayout.setFitsSystemWindows(false);

        }

    }


    /**
     * 为头部是 ImageView 的界面设置状态栏全透明
     *
     * @param activity       需要设置的activity
     * @param needOffsetView 需要向下偏移的 View
     */

    public static void setTransparentForImageView(Activity activity, View needOffsetView) {

        setTranslucentForImageView(activity, 0, needOffsetView);

    }


    /**
     * 为头部是 ImageView 的界面设置状态栏透明(使用默认透明度)
     *
     * @param activity       需要设置的activity
     * @param needOffsetView 需要向下偏移的 View
     */

    public static void setTranslucentForImageView(Activity activity, View needOffsetView) {

        setTranslucentForImageView(activity, DEFAULT_STATUS_BAR_ALPHA, needOffsetView);

    }


    /**
     * 为头部是 ImageView 的界面设置状态栏透明
     *
     * @param activity       需要设置的activity
     * @param statusBarAlpha 状态栏透明度
     * @param needOffsetView 需要向下偏移的 View
     */

    public static void setTranslucentForImageView(Activity activity, @IntRange(from = 0, to = 255) int statusBarAlpha,

                                                  View needOffsetView) {

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {

            return;

        }

        setTransparentForWindow(activity);

        addTranslucentView(activity, statusBarAlpha);

        if (needOffsetView != null) {

            Object haveSetOffset = needOffsetView.getTag(TAG_KEY_HAVE_SET_OFFSET);

            if (haveSetOffset != null && (Boolean) haveSetOffset) {

                return;

            }

            ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) needOffsetView.getLayoutParams();

            layoutParams.setMargins(layoutParams.leftMargin, layoutParams.topMargin + getStatusBarHeight(activity),

                    layoutParams.rightMargin, layoutParams.bottomMargin);

            needOffsetView.setTag(TAG_KEY_HAVE_SET_OFFSET, true);

        }

    }


    /**
     * 为 fragment 头部是 ImageView 的设置状态栏透明
     *
     * @param activity       fragment 对应的 activity
     * @param needOffsetView 需要向下偏移的 View
     */

    public static void setTranslucentForImageViewInFragment(Activity activity, View needOffsetView) {

        setTranslucentForImageViewInFragment(activity, DEFAULT_STATUS_BAR_ALPHA, needOffsetView);

    }


    /**
     * 为 fragment 头部是 ImageView 的设置状态栏透明
     *
     * @param activity       fragment 对应的 activity
     * @param needOffsetView 需要向下偏移的 View
     */

    public static void setTransparentForImageViewInFragment(Activity activity, View needOffsetView) {

        setTranslucentForImageViewInFragment(activity, 0, needOffsetView);

    }


    /**
     * 为 fragment 头部是 ImageView 的设置状态栏透明
     *
     * @param activity       fragment 对应的 activity
     * @param statusBarAlpha 状态栏透明度
     * @param needOffsetView 需要向下偏移的 View
     */

    public static void setTranslucentForImageViewInFragment(Activity activity, @IntRange(from = 0, to = 255) int statusBarAlpha,

                                                            View needOffsetView) {

        setTranslucentForImageView(activity, statusBarAlpha, needOffsetView);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {

            clearPreviousSetting(activity);

        }

    }


    /**
     * 隐藏伪状态栏 View
     *
     * @param activity 调用的 Activity
     */

    public static void hideFakeStatusBarView(Activity activity) {

        ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();

        View fakeStatusBarView = decorView.findViewById(FAKE_STATUS_BAR_VIEW_ID);

        if (fakeStatusBarView != null) {

            fakeStatusBarView.setVisibility(View.GONE);

        }

        View fakeTranslucentView = decorView.findViewById(FAKE_TRANSLUCENT_VIEW_ID);

        if (fakeTranslucentView != null) {

            fakeTranslucentView.setVisibility(View.GONE);

        }

    }


    ///////////////////////////////////////////////////////////////////////////////////


    @TargetApi(Build.VERSION_CODES.KITKAT)

    private static void clearPreviousSetting(Activity activity) {

        ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();

        View fakeStatusBarView = decorView.findViewById(FAKE_STATUS_BAR_VIEW_ID);

        if (fakeStatusBarView != null) {

            decorView.removeView(fakeStatusBarView);

            ViewGroup rootView = (ViewGroup) ((ViewGroup) activity.findViewById(android.R.id.content)).getChildAt(0);

            rootView.setPadding(0, 0, 0, 0);

        }

    }


    /**
     * 添加半透明矩形条
     *
     * @param activity       需要设置的 activity
     * @param statusBarAlpha 透明值
     */

    private static void addTranslucentView(Activity activity, @IntRange(from = 0, to = 255) int statusBarAlpha) {

        ViewGroup contentView = (ViewGroup) activity.findViewById(android.R.id.content);

        View fakeTranslucentView = contentView.findViewById(FAKE_TRANSLUCENT_VIEW_ID);

        if (fakeTranslucentView != null) {

            if (fakeTranslucentView.getVisibility() == View.GONE) {

                fakeTranslucentView.setVisibility(View.VISIBLE);

            }

            fakeTranslucentView.setBackgroundColor(Color.argb(statusBarAlpha, 0, 0, 0));

        } else {

            contentView.addView(createTranslucentStatusBarView(activity, statusBarAlpha));

        }

    }


    /**
     * 生成一个和状态栏大小相同的彩色矩形条
     *
     * @param activity 需要设置的 activity
     * @param color    状态栏颜色值
     * @return 状态栏矩形条
     */

    private static View createStatusBarView(Activity activity, @ColorInt int color) {

        return createStatusBarView(activity, color, 0);

    }


    /**
     * 生成一个和状态栏大小相同的半透明矩形条
     *
     * @param activity 需要设置的activity
     * @param color    状态栏颜色值
     * @param alpha    透明值
     * @return 状态栏矩形条
     */

    private static View createStatusBarView(Activity activity, @ColorInt int color, int alpha) {

        // 绘制一个和状态栏一样高的矩形

        View statusBarView = new View(activity);

        LinearLayout.LayoutParams params =

                new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity));

        statusBarView.setLayoutParams(params);

        statusBarView.setBackgroundColor(calculateStatusColor(color, alpha));

        statusBarView.setId(FAKE_STATUS_BAR_VIEW_ID);

        return statusBarView;

    }


    /**
     * 设置根布局参数
     */

    private static void setRootView(Activity activity) {

        ViewGroup parent = (ViewGroup) activity.findViewById(android.R.id.content);

        for (int i = 0, count = parent.getChildCount(); i < count; i++) {

            View childView = parent.getChildAt(i);

            if (childView instanceof ViewGroup) {

                childView.setFitsSystemWindows(true);

                ((ViewGroup) childView).setClipToPadding(true);

            }

        }

    }


    /**
     * 设置透明
     */

    private static void setTransparentForWindow(Activity activity) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            activity.getWindow().setStatusBarColor(Color.TRANSPARENT);

            activity.getWindow()

                    .getDecorView()

                    .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);

        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {

            activity.getWindow()

                    .setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

        }

    }


    /**
     * 使状态栏透明
     */

    @TargetApi(Build.VERSION_CODES.KITKAT)

    private static void transparentStatusBar(Activity activity) {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

            activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);

            activity.getWindow().setStatusBarColor(Color.TRANSPARENT);

        } else {

            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

        }

    }


    /**
     * 创建半透明矩形 View
     *
     * @param alpha 透明值
     * @return 半透明 View
     */

    private static View createTranslucentStatusBarView(Activity activity, int alpha) {

        // 绘制一个和状态栏一样高的矩形

        View statusBarView = new View(activity);

        LinearLayout.LayoutParams params =

                new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, getStatusBarHeight(activity));

        statusBarView.setLayoutParams(params);

        statusBarView.setBackgroundColor(Color.argb(alpha, 0, 0, 0));

        statusBarView.setId(FAKE_TRANSLUCENT_VIEW_ID);

        return statusBarView;

    }


    /**
     * 获取状态栏高度
     *
     * @param context context
     * @return 状态栏高度
     */

    private static int getStatusBarHeight(Context context) {

        // 获得状态栏高度

        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");

        return context.getResources().getDimensionPixelSize(resourceId);

    }


    /**
     * 计算状态栏颜色
     *
     * @param color color值
     * @param alpha alpha值
     * @return 最终的状态栏颜色
     */

    private static int calculateStatusColor(@ColorInt int color, int alpha) {

        if (alpha == 0) {

            return color;

        }

        float a = 1 - alpha / 255f;

        int red = color >> 16 & 0xff;

        int green = color >> 8 & 0xff;

        int blue = color & 0xff;

        red = (int) (red * a + 0.5);

        green = (int) (green * a + 0.5);

        blue = (int) (blue * a + 0.5);

        return 0xff << 24 | red << 16 | green << 8 | blue;

    }
}
